LOMM (upward/downward multiband compressor) (#6925)

cmake/modules/PluginList.cmake

@@ -41,6 +41,7 @@ SET(LMMS_PLUGIN_LIST
 	HydrogenImport
 	LadspaBrowser
 	LadspaEffect
+	LOMM
 	Lv2Effect
 	Lv2Instrument
 	Lb302

include/Effect.h

@@ -157,6 +157,11 @@ public:
 	{
 		m_noRun = _state;
 	}
+	
+	inline TempoSyncKnobModel* autoQuitModel()
+	{
+		return &m_autoQuitModel;
+	}
 
 	EffectChain * effectChain() const
 	{

plugins/LOMM/CMakeLists.txt

@@ -0,0 +1,3 @@
+INCLUDE(BuildPlugin)
+
+BUILD_PLUGIN(lomm LOMM.cpp LOMMControls.cpp LOMMControlDialog.cpp MOCFILES LOMM.h LOMMControls.h LOMMControlDialog.h EMBEDDED_RESOURCES *.png)

plugins/LOMM/LOMM.cpp

@@ -0,0 +1,444 @@
+/*
+ * LOMM.cpp
+ *
+ * Copyright (c) 2023 Lost Robot <r94231/at/gmail/dot/com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include "LOMM.h"
+
+#include "embed.h"
+#include "plugin_export.h"
+
+namespace lmms
+{
+
+extern "C"
+{
+	Plugin::Descriptor PLUGIN_EXPORT lomm_plugin_descriptor =
+	{
+		LMMS_STRINGIFY(PLUGIN_NAME),
+		"LOMM",
+		QT_TRANSLATE_NOOP("PluginBrowser", "Upwards/downwards multiband compression plugin powered by the eldritch elder god LOMMUS."),
+		"Lost Robot <r94231/at/gmail/dot/com>",
+		0x0100,
+		Plugin::Type::Effect,
+		new PluginPixmapLoader("logo"),
+		nullptr,
+		nullptr
+	};
+}
+
+
+LOMMEffect::LOMMEffect(Model* parent, const Descriptor::SubPluginFeatures::Key* key) :
+	Effect(&lomm_plugin_descriptor, parent, key),
+	m_lommControls(this),
+	m_sampleRate(Engine::audioEngine()->processingSampleRate()),
+	m_lp1(m_sampleRate),
+	m_lp2(m_sampleRate),
+	m_hp1(m_sampleRate),
+	m_hp2(m_sampleRate),
+	m_needsUpdate(true),
+	m_coeffPrecalc(-0.05),
+	m_crestTimeConst(0.999),
+	m_lookWrite(0),
+	m_lookBufLength(2)
+{
+	autoQuitModel()->setValue(autoQuitModel()->maxValue());
+	
+	m_yL[0][0] = m_yL[0][1] = LOMM_MIN_FLOOR;
+	m_yL[1][0] = m_yL[1][1] = LOMM_MIN_FLOOR;
+	m_yL[2][0] = m_yL[2][1] = LOMM_MIN_FLOOR;
+	
+	connect(Engine::audioEngine(), SIGNAL(sampleRateChanged()), this, SLOT(changeSampleRate()));
+	emit changeSampleRate();
+}
+
+void LOMMEffect::changeSampleRate()
+{
+	m_sampleRate = Engine::audioEngine()->processingSampleRate();
+	m_lp1.setSampleRate(m_sampleRate);
+	m_lp2.setSampleRate(m_sampleRate);
+	m_hp1.setSampleRate(m_sampleRate);
+	m_hp2.setSampleRate(m_sampleRate);
+	
+	m_coeffPrecalc = -2.2f / (m_sampleRate * 0.001f);
+	m_needsUpdate = true;
+	
+	m_crestTimeConst = exp(-1.f / (0.2f * m_sampleRate));
+	
+	m_lookBufLength = std::ceil((LOMM_MAX_LOOKAHEAD / 1000.f) * m_sampleRate) + 2;
+	for (int i = 0; i < 2; ++i)
+	{
+		for (int j = 0; j < 3; ++j)
+		{
+			m_inLookBuf[j][i].resize(m_lookBufLength);
+			m_scLookBuf[j][i].resize(m_lookBufLength, LOMM_MIN_FLOOR);
+		}
+	}
+}
+
+void LOMMEffect::clearFilterHistories()
+{
+	m_lp1.clearHistory();
+	m_lp2.clearHistory();
+	m_hp1.clearHistory();
+	m_hp2.clearHistory();
+}
+
+
+
+
+bool LOMMEffect::processAudioBuffer(sampleFrame* buf, const fpp_t frames)
+{
+	if (!isEnabled() || !isRunning())
+	{
+		return false;
+	}
+	
+	if (m_needsUpdate || m_lommControls.m_split1Model.isValueChanged())
+	{
+		m_lp1.setLowpass(m_lommControls.m_split1Model.value());
+		m_hp1.setHighpass(m_lommControls.m_split1Model.value());
+	}
+	if (m_needsUpdate || m_lommControls.m_split2Model.isValueChanged())
+	{
+		m_lp2.setLowpass(m_lommControls.m_split2Model.value());
+		m_hp2.setHighpass(m_lommControls.m_split2Model.value());
+	}
+	m_needsUpdate = false;
+
+	float outSum = 0.f;
+	const float d = dryLevel();
+	const float w = wetLevel();
+	
+	const float depth = m_lommControls.m_depthModel.value();
+	const float time = m_lommControls.m_timeModel.value();
+	const float inVol = dbfsToAmp(m_lommControls.m_inVolModel.value());
+	const float outVol = dbfsToAmp(m_lommControls.m_outVolModel.value());
+	const float upward = m_lommControls.m_upwardModel.value();
+	const float downward = m_lommControls.m_downwardModel.value();
+	const bool split1Enabled = m_lommControls.m_split1EnabledModel.value();
+	const bool split2Enabled = m_lommControls.m_split2EnabledModel.value();
+	const bool band1Enabled = m_lommControls.m_band1EnabledModel.value();
+	const bool band2Enabled = m_lommControls.m_band2EnabledModel.value();
+	const bool band3Enabled = m_lommControls.m_band3EnabledModel.value();
+	const float inHigh = dbfsToAmp(m_lommControls.m_inHighModel.value());
+	const float inMid = dbfsToAmp(m_lommControls.m_inMidModel.value());
+	const float inLow = dbfsToAmp(m_lommControls.m_inLowModel.value());
+	float inBandVol[3] = {inHigh, inMid, inLow};
+	const float outHigh = dbfsToAmp(m_lommControls.m_outHighModel.value());
+	const float outMid = dbfsToAmp(m_lommControls.m_outMidModel.value());
+	const float outLow = dbfsToAmp(m_lommControls.m_outLowModel.value());
+	float outBandVol[3] = {outHigh, outMid, outLow};
+	const float aThreshH = m_lommControls.m_aThreshHModel.value();
+	const float aThreshM = m_lommControls.m_aThreshMModel.value();
+	const float aThreshL = m_lommControls.m_aThreshLModel.value();
+	float aThresh[3] = {aThreshH, aThreshM, aThreshL};
+	const float aRatioH = m_lommControls.m_aRatioHModel.value();
+	const float aRatioM = m_lommControls.m_aRatioMModel.value();
+	const float aRatioL = m_lommControls.m_aRatioLModel.value();
+	float aRatio[3] = {1.f / aRatioH, 1.f / aRatioM, 1.f / aRatioL};
+	const float bThreshH = m_lommControls.m_bThreshHModel.value();
+	const float bThreshM = m_lommControls.m_bThreshMModel.value();
+	const float bThreshL = m_lommControls.m_bThreshLModel.value();
+	float bThresh[3] = {bThreshH, bThreshM, bThreshL};
+	const float bRatioH = m_lommControls.m_bRatioHModel.value();
+	const float bRatioM = m_lommControls.m_bRatioMModel.value();
+	const float bRatioL = m_lommControls.m_bRatioLModel.value();
+	float bRatio[3] = {1.f / bRatioH, 1.f / bRatioM, 1.f / bRatioL};
+	const float atkH = m_lommControls.m_atkHModel.value() * time;
+	const float atkM = m_lommControls.m_atkMModel.value() * time;
+	const float atkL = m_lommControls.m_atkLModel.value() * time;
+	const float atkCoefH = msToCoeff(atkH);
+	const float atkCoefM = msToCoeff(atkM);
+	const float atkCoefL = msToCoeff(atkL);
+	float atk[3] = {atkH, atkM, atkL};
+	float atkCoef[3] = {atkCoefH, atkCoefM, atkCoefL};
+	const float relH = m_lommControls.m_relHModel.value() * time;
+	const float relM = m_lommControls.m_relMModel.value() * time;
+	const float relL = m_lommControls.m_relLModel.value() * time;
+	const float relCoefH = msToCoeff(relH);
+	const float relCoefM = msToCoeff(relM);
+	const float relCoefL = msToCoeff(relL);
+	float rel[3] = {relH, relM, relL};
+	float relCoef[3] = {relCoefH, relCoefM, relCoefL};
+	const float rmsTime = m_lommControls.m_rmsTimeModel.value();
+	const float rmsTimeConst = (rmsTime == 0) ? 0 : exp(-1.f / (rmsTime * 0.001f * m_sampleRate));
+	const float knee = m_lommControls.m_kneeModel.value() * 0.5f;
+	const float range = m_lommControls.m_rangeModel.value();
+	const float rangeAmp = dbfsToAmp(range);
+	const float balance = m_lommControls.m_balanceModel.value();
+	const float balanceAmpTemp = dbfsToAmp(balance);
+	const float balanceAmp[2] = {1.f / balanceAmpTemp, balanceAmpTemp};
+	const bool depthScaling = m_lommControls.m_depthScalingModel.value();
+	const bool stereoLink = m_lommControls.m_stereoLinkModel.value();
+	const float autoTime = m_lommControls.m_autoTimeModel.value() * m_lommControls.m_autoTimeModel.value();
+	const float mix = m_lommControls.m_mixModel.value();
+	const bool midside = m_lommControls.m_midsideModel.value();
+	const bool lookaheadEnable = m_lommControls.m_lookaheadEnableModel.value();
+	const int lookahead = std::ceil((m_lommControls.m_lookaheadModel.value() / 1000.f) * m_sampleRate);
+	const bool feedback = m_lommControls.m_feedbackModel.value() && !lookaheadEnable;
+	const bool lowSideUpwardSuppress = m_lommControls.m_lowSideUpwardSuppressModel.value() && midside;
+	
+	for (fpp_t f = 0; f < frames; ++f)
+	{
+		std::array<sample_t, 2> s = {buf[f][0], buf[f][1]};
+		
+		// Convert left/right to mid/side.  Side channel is intentionally made
+		// to be 6 dB louder to bring it into volume ranges comparable to the mid channel.
+		if (midside)
+		{
+			float tempS0 = s[0];
+			s[0] = (s[0] + s[1]) * 0.5f;
+			s[1] = tempS0 - s[1];
+		}
+		
+		std::array<std::array<float, 2>, 3> bands = {{}};
+		std::array<std::array<float, 2>, 3> bandsDry = {{}};
+		
+		for (int i = 0; i < 2; ++i)// Channels
+		{
+			// These values are for the Auto time knob.  Higher crest factor allows for faster attack/release.
+			float inSquared = s[i] * s[i];
+			m_crestPeakVal[i] = std::max(std::max(LOMM_MIN_FLOOR, inSquared), m_crestTimeConst * m_crestPeakVal[i] + (1 - m_crestTimeConst) * (inSquared));
+			m_crestRmsVal[i] = std::max(LOMM_MIN_FLOOR, m_crestTimeConst * m_crestRmsVal[i] + ((1 - m_crestTimeConst) * (inSquared)));
+			m_crestFactorVal[i] = m_crestPeakVal[i] / m_crestRmsVal[i];
+			float crestFactorValTemp = ((m_crestFactorVal[i] - LOMM_AUTO_TIME_ADJUST) * autoTime) + LOMM_AUTO_TIME_ADJUST;
+		
+			// Crossover filters
+			bands[0][i] = m_hp1.update(s[i], i);
+			bands[1][i] = m_hp2.update(m_lp1.update(s[i], i), i);
+			bands[2][i] = m_lp2.update(s[i], i);
+			
+			if (!split1Enabled)
+			{
+				bands[1][i] += bands[0][i];
+				bands[0][i] = 0;
+			}
+			if (!split2Enabled)
+			{
+				bands[1][i] += bands[2][i];
+				bands[2][i] = 0;
+			}
+			
+			// Mute disabled bands
+			bands[0][i] *= band1Enabled;
+			bands[1][i] *= band2Enabled;
+			bands[2][i] *= band3Enabled;
+			
+			std::array<float, 3> detect = {0, 0, 0};
+			for (int j = 0; j < 3; ++j)// Bands
+			{
+				bandsDry[j][i] = bands[j][i];
+				
+				if (feedback && !lookaheadEnable)
+				{
+					bands[j][i] = m_prevOut[j][i];
+				}
+				
+				bands[j][i] *= inBandVol[j] * inVol * balanceAmp[i];
+				
+				if (rmsTime > 0)// RMS
+				{
+					m_rms[j][i] = rmsTimeConst * m_rms[j][i] + ((1 - rmsTimeConst) * (bands[j][i] * bands[j][i]));
+					detect[j] = std::max(LOMM_MIN_FLOOR, std::sqrt(m_rms[j][i]));
+				}
+				else// Peak
+				{
+					detect[j] = std::max(LOMM_MIN_FLOOR, std::abs(bands[j][i]));
+				}
+				
+				if (detect[j] > m_yL[j][i])// Attack phase
+				{
+					// Calculate attack value depending on crest factor
+					const float currentAttack = autoTime
+						? msToCoeff(LOMM_AUTO_TIME_ADJUST * atk[j] / crestFactorValTemp)
+						: atkCoef[j];
+					
+					m_yL[j][i] = m_yL[j][i] * currentAttack + (1 - currentAttack) * detect[j];
+				}
+				else// Release phase
+				{
+					// Calculate release value depending on crest factor
+					const float currentRelease = autoTime
+						? msToCoeff(LOMM_AUTO_TIME_ADJUST * rel[j] / crestFactorValTemp)
+						: relCoef[j];
+					
+					m_yL[j][i] = m_yL[j][i] * currentRelease + (1 - currentRelease) * detect[j];
+				}
+				
+				m_yL[j][i] = std::max(LOMM_MIN_FLOOR, m_yL[j][i]);
+				
+				float yAmp = m_yL[j][i];
+				if (lookaheadEnable)
+				{
+					float temp = yAmp;
+					// Lookahead is calculated by picking the largest value between
+					// the current sidechain signal and the delayed sidechain signal.
+					yAmp = std::max(m_scLookBuf[j][i][m_lookWrite], m_scLookBuf[j][i][(m_lookWrite + m_lookBufLength - lookahead) % m_lookBufLength]);
+					m_scLookBuf[j][i][m_lookWrite] = temp;
+				}
+				
+				const float yDbfs = ampToDbfs(yAmp);
+				
+				float aboveGain = 0;
+				float belowGain = 0;
+				
+				// Downward compression
+				if (yDbfs - aThresh[j] < -knee)// Below knee
+				{
+					aboveGain = yDbfs;
+				}
+				else if (yDbfs - aThresh[j] < knee)// Within knee
+				{
+					const float temp = yDbfs - aThresh[j] + knee;
+					aboveGain = yDbfs + (aRatio[j] - 1) * temp * temp / (4 * knee);
+				}
+				else// Above knee
+				{
+					aboveGain = aThresh[j] + (yDbfs - aThresh[j]) * aRatio[j];
+				}
+				if (aboveGain < yDbfs)
+				{
+					if (downward * depth <= 1)
+					{
+						aboveGain = linearInterpolate(yDbfs, aboveGain, downward * depth);
+					}
+					else
+					{
+						aboveGain = linearInterpolate(aboveGain, aThresh[j], downward * depth - 1);
+					}
+				}
+				
+				// Upward compression
+				if (yDbfs - bThresh[j] > knee)// Above knee
+				{
+					belowGain = yDbfs;
+				}
+				else if (bThresh[j] - yDbfs < knee)// Within knee
+				{
+					const float temp = bThresh[j] - yDbfs + knee;
+					belowGain = yDbfs + (1 - bRatio[j]) * temp * temp / (4 * knee);
+				}
+				else// Below knee
+				{
+					belowGain = bThresh[j] + (yDbfs - bThresh[j]) * bRatio[j];
+				}
+				if (belowGain > yDbfs)
+				{
+					if (upward * depth <= 1)
+					{
+						belowGain = linearInterpolate(yDbfs, belowGain, upward * depth);
+					}
+					else
+					{
+						belowGain = linearInterpolate(belowGain, bThresh[j], upward * depth - 1);
+					}
+				}
+				
+				m_displayIn[j][i] = yDbfs;
+				m_gainResult[j][i] = (dbfsToAmp(aboveGain) / yAmp) * (dbfsToAmp(belowGain) / yAmp);
+				if (lowSideUpwardSuppress && m_gainResult[j][i] > 1 && j == 2 && i == 1) //undo upward compression if low side band
+				{
+					m_gainResult[j][i] = 1;
+				}
+				m_gainResult[j][i] = std::min(m_gainResult[j][i], rangeAmp);
+				m_displayOut[j][i] = ampToDbfs(std::max(LOMM_MIN_FLOOR, yAmp * m_gainResult[j][i]));
+				
+				// Apply the same gain reduction to both channels if stereo link is enabled.
+				if (stereoLink && i == 1)
+				{
+					if (m_gainResult[j][1] < m_gainResult[j][0])
+					{
+						m_gainResult[j][0] = m_gainResult[j][1];
+						m_displayOut[j][0] = m_displayIn[j][0] - (m_displayIn[j][1] - m_displayOut[j][1]);
+					}
+					else
+					{
+						m_gainResult[j][1] = m_gainResult[j][0];
+						m_displayOut[j][1] = m_displayIn[j][1] - (m_displayIn[j][0] - m_displayOut[j][0]);
+					}
+				}
+			}
+		}
+		
+		for (int i = 0; i < 2; ++i)// Channels
+		{
+			for (int j = 0; j < 3; ++j)// Bands
+			{
+				if (lookaheadEnable)
+				{
+					float temp = bands[j][i];
+					bands[j][i] = m_inLookBuf[j][i][m_lookWrite];
+					m_inLookBuf[j][i][m_lookWrite] = temp;
+					bandsDry[j][i] = bands[j][i];
+				}
+				else if (feedback)
+				{
+					bands[j][i] = bandsDry[j][i] * inBandVol[j] * inVol * balanceAmp[i];
+				}
+			
+				// Apply gain reduction
+				bands[j][i] *= m_gainResult[j][i];
+				
+				// Store for Feedback
+				m_prevOut[j][i] = bands[j][i];
+				
+				bands[j][i] *= outBandVol[j];
+				
+				bands[j][i] = linearInterpolate(bandsDry[j][i], bands[j][i], mix);
+			}
+			
+			s[i] = bands[0][i] + bands[1][i] + bands[2][i];
+			
+			s[i] *= linearInterpolate(1.f, outVol, mix * (depthScaling ? depth : 1));
+		}
+		
+		// Convert mid/side back to left/right.
+		// Note that the side channel was intentionally made to be 6 dB louder prior to compression.
+		if (midside)
+		{
+			float tempS0 = s[0];
+			s[0] = s[0] + (s[1] * 0.5f);
+			s[1] = tempS0 - (s[1] * 0.5f);
+		}
+		
+		if (--m_lookWrite < 0) { m_lookWrite = m_lookBufLength - 1; }
+
+		buf[f][0] = d * buf[f][0] + w * s[0];
+		buf[f][1] = d * buf[f][1] + w * s[1];
+		outSum += buf[f][0] + buf[f][1];
+	}
+
+	checkGate(outSum / frames);
+	return isRunning();
+}
+
+extern "C"
+{
+	// necessary for getting instance out of shared lib
+	PLUGIN_EXPORT Plugin * lmms_plugin_main(Model* parent, void* data)
+	{
+		return new LOMMEffect(parent, static_cast<const Plugin::Descriptor::SubPluginFeatures::Key *>(data));
+	}
+}
+
+} // namespace lmms

plugins/LOMM/LOMM.h

@@ -0,0 +1,106 @@
+/*
+ * LOMM.h
+ *
+ * Copyright (c) 2023 Lost Robot <r94231/at/gmail/dot/com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+
+#ifndef LMMS_LOMM_H
+#define LMMS_LOMM_H
+
+#include "LOMMControls.h"
+#include "Effect.h"
+
+#include "BasicFilters.h"
+#include "lmms_math.h"
+
+namespace lmms
+{
+
+constexpr inline float LOMM_MIN_FLOOR = 0.00012589;// -72 dBFS
+constexpr inline float LOMM_MAX_LOOKAHEAD = 20.f;
+constexpr inline float LOMM_AUTO_TIME_ADJUST = 5.f;
+
+class LOMMEffect : public Effect
+{
+	Q_OBJECT
+public:
+	LOMMEffect(Model* parent, const Descriptor::SubPluginFeatures::Key* key);
+	~LOMMEffect() override = default;
+	bool processAudioBuffer(sampleFrame* buf, const fpp_t frames) override;
+
+	EffectControls* controls() override
+	{
+		return &m_lommControls;
+	}
+	
+	void clearFilterHistories();
+	
+	inline float msToCoeff(float ms)
+	{
+		return (ms == 0) ? 0 : exp(m_coeffPrecalc / ms);
+	}
+
+private slots:
+	void changeSampleRate();
+
+private:
+	LOMMControls m_lommControls;
+	
+	float m_sampleRate;
+	
+	StereoLinkwitzRiley m_lp1;
+	StereoLinkwitzRiley m_lp2;
+	
+	StereoLinkwitzRiley m_hp1;
+	StereoLinkwitzRiley m_hp2;
+	
+	bool m_needsUpdate;
+	float m_coeffPrecalc;
+	
+	std::array<std::array<float, 2>, 3> m_yL;
+	std::array<std::array<float, 2>, 3> m_rms;
+	std::array<std::array<float, 2>, 3> m_gainResult;
+	
+	std::array<std::array<float, 2>, 3> m_displayIn;
+	std::array<std::array<float, 2>, 3> m_displayOut;
+	
+	std::array<float, 2> m_crestPeakVal;
+	std::array<float, 2> m_crestRmsVal;
+	std::array<float, 2> m_crestFactorVal;
+	float m_crestTimeConst = 0.0f;
+	
+	std::array<std::array<float, 2>, 3> m_prevOut;
+	
+	std::array<std::array<std::vector<float>, 2>, 3> m_inLookBuf;
+	std::array<std::array<std::vector<float>, 2>, 3> m_scLookBuf;
+	
+	int m_lookWrite = 0;
+	int m_lookBufLength = 0;
+	
+	friend class LOMMControls;
+	friend class gui::LOMMControlDialog;
+};
+
+
+} // namespace lmms
+
+#endif // LMMS_LOMM_H

plugins/LOMM/LOMMControlDialog.cpp

@@ -0,0 +1,275 @@
+/*
+ * LOMMControlDialog.cpp
+ *
+ * Copyright (c) 2023 Lost Robot <r94231/at/gmail/dot/com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+
+#include "LOMM.h"
+#include "LOMMControlDialog.h"
+#include "LOMMControls.h"
+
+
+namespace lmms::gui
+{
+
+LOMMControlDialog::LOMMControlDialog(LOMMControls* controls) :
+	EffectControlDialog(controls),
+	m_controls(controls)
+{
+	setAutoFillBackground(true);
+	QPalette pal;
+	pal.setBrush(backgroundRole(), PLUGIN_NAME::getIconPixmap("artwork"));
+	setPalette(pal);
+	setFixedSize(400, 256);
+
+	createKnob(KnobType::Bright26, this, 10, 4, &controls->m_depthModel, tr("Depth:"), "", tr("Compression amount for all bands"));
+	createKnob(KnobType::Bright26, this, 10, 41, &controls->m_timeModel, tr("Time:"), "", tr("Attack/release scaling for all bands"));
+	createKnob(KnobType::Bright26, this, 10, 220, &controls->m_inVolModel, tr("Input Volume:"), " dB", tr("Input volume"));
+	createKnob(KnobType::Bright26, this, 363, 220, &controls->m_outVolModel, tr("Output Volume:"), " dB", tr("Output volume"));
+	createKnob(KnobType::Bright26, this, 10, 179, &controls->m_upwardModel, tr("Upward Depth:"), "", tr("Upward compression amount for all bands"));
+	createKnob(KnobType::Bright26, this, 363, 179, &controls->m_downwardModel, tr("Downward Depth:"), "", tr("Downward compression amount for all bands"));
+	
+	createLcdFloatSpinBox(5, 2, "11green", tr("High/Mid Crossover"), this, 352, 76, &controls->m_split1Model, tr("High/Mid Crossover"));
+	createLcdFloatSpinBox(5, 2, "11green", tr("Mid/Low Crossover"), this, 352, 156, &controls->m_split2Model, tr("Mid/Low Crossover"));
+	
+	createPixmapButton(tr("High/mid band split"), this, 369, 104, &controls->m_split1EnabledModel, "crossover_led_green", "crossover_led_off", tr("High/mid band split"));
+	createPixmapButton(tr("Mid/low band split"), this, 369, 126, &controls->m_split2EnabledModel, "crossover_led_green", "crossover_led_off", tr("Mid/low band split"));
+	
+	createPixmapButton(tr("Enable High Band"), this, 143, 66, &controls->m_band1EnabledModel, "high_band_active", "high_band_inactive", tr("Enable High Band"));
+	createPixmapButton(tr("Enable Mid Band"), this, 143, 146, &controls->m_band2EnabledModel, "mid_band_active", "mid_band_inactive", tr("Enable Mid Band"));
+	createPixmapButton(tr("Enable Low Band"), this, 143, 226, &controls->m_band3EnabledModel, "low_band_active", "low_band_inactive", tr("Enable Low Band"));
+	
+	createKnob(KnobType::Bright26, this, 53, 43, &controls->m_inHighModel, tr("High Input Volume:"), " dB", tr("Input volume for high band"));
+	createKnob(KnobType::Bright26, this, 53, 123, &controls->m_inMidModel, tr("Mid Input Volume:"), " dB", tr("Input volume for mid band"));
+	createKnob(KnobType::Bright26, this, 53, 203, &controls->m_inLowModel, tr("Low Input Volume:"), " dB", tr("Input volume for low band"));
+	createKnob(KnobType::Bright26, this, 320, 43, &controls->m_outHighModel, tr("High Output Volume:"), " dB", tr("Output volume for high band"));
+	createKnob(KnobType::Bright26, this, 320, 123, &controls->m_outMidModel, tr("Mid Output Volume:"), " dB", tr("Output volume for mid band"));
+	createKnob(KnobType::Bright26, this, 320, 203, &controls->m_outLowModel, tr("Low Output Volume:"), " dB", tr("Output volume for low band"));
+	
+	createLcdFloatSpinBox(3, 3, "11green", tr("Above Threshold High"), this, 300, 13, &controls->m_aThreshHModel, tr("Downward compression threshold for high band"));
+	createLcdFloatSpinBox(3, 3, "11green", tr("Above Threshold Mid"), this, 300, 93, &controls->m_aThreshMModel, tr("Downward compression threshold for mid band"));
+	createLcdFloatSpinBox(3, 3, "11green", tr("Above Threshold Low"), this, 300, 173, &controls->m_aThreshLModel, tr("Downward compression threshold for low band"));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Above Ratio High"), this, 284, 44, &controls->m_aRatioHModel, tr("Downward compression ratio for high band"));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Above Ratio Mid"), this, 284, 124, &controls->m_aRatioMModel, tr("Downward compression ratio for mid band"));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Above Ratio Low"), this, 284, 204, &controls->m_aRatioLModel, tr("Downward compression ratio for low band"));
+
+	createLcdFloatSpinBox(3, 3, "11green", tr("Below Threshold High"), this, 59, 13, &controls->m_bThreshHModel, tr("Upward compression threshold for high band"));
+	createLcdFloatSpinBox(3, 3, "11green", tr("Below Threshold Mid"), this, 59, 93, &controls->m_bThreshMModel, tr("Upward compression threshold for mid band"));
+	createLcdFloatSpinBox(3, 3, "11green", tr("Below Threshold Low"), this, 59, 173, &controls->m_bThreshLModel, tr("Upward compression threshold for low band"));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Below Ratio High"), this, 87, 44, &controls->m_bRatioHModel, tr("Upward compression ratio for high band"));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Below Ratio Mid"), this, 87, 124, &controls->m_bRatioMModel, tr("Upward compression ratio for mid band"));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Below Ratio Low"), this, 87, 204, &controls->m_bRatioLModel, tr("Upward compression ratio for low band"));
+	
+	createKnob(KnobType::Small17, this, 120, 61, &controls->m_atkHModel, tr("Attack High:"), " ms", tr("Attack time for high band"));
+	createKnob(KnobType::Small17, this, 120, 141, &controls->m_atkMModel, tr("Attack Mid:"), " ms", tr("Attack time for mid band"));
+	createKnob(KnobType::Small17, this, 120, 221, &controls->m_atkLModel, tr("Attack Low:"), " ms", tr("Attack time for low band"));
+	createKnob(KnobType::Small17, this, 261, 61, &controls->m_relHModel, tr("Release High:"), " ms", tr("Release time for high band"));
+	createKnob(KnobType::Small17, this, 261, 141, &controls->m_relMModel, tr("Release Mid:"), " ms", tr("Release time for mid band"));
+	createKnob(KnobType::Small17, this, 261, 221, &controls->m_relLModel, tr("Release Low:"), " ms", tr("Release time for low band"));
+	
+	createKnob(KnobType::Small17, this, 380, 42, &controls->m_rmsTimeModel, tr("RMS Time:"), " ms", tr("RMS size for sidechain signal (set to 0 for Peak mode)"));
+	createKnob(KnobType::Small17, this, 356, 42, &controls->m_kneeModel, tr("Knee:"), " dB", tr("Knee size for all compressors"));
+	createKnob(KnobType::Small17, this, 24, 146, &controls->m_rangeModel, tr("Range:"), " dB", tr("Maximum gain increase for all bands"));
+	createKnob(KnobType::Small17, this, 13, 114, &controls->m_balanceModel, tr("Balance:"), " dB", tr("Bias input volume towards one channel"));
+	
+	createPixmapButton(tr("Scale output volume with Depth"), this, 51, 0, &controls->m_depthScalingModel, "depthScaling_active", "depthScaling_inactive",
+						tr("Scale output volume with Depth parameter"));
+	createPixmapButton(tr("Stereo Link"), this, 52, 237, &controls->m_stereoLinkModel, "stereoLink_active", "stereoLink_inactive",
+						tr("Apply same gain change to both channels"));
+	
+	createKnob(KnobType::Small17, this, 24, 80, &controls->m_autoTimeModel, tr("Auto Time:"), "", tr("Speed up attack and release times when transients occur"));
+	createKnob(KnobType::Bright26, this, 363, 4, &controls->m_mixModel, tr("Mix:"), "", tr("Wet/Dry of all bands"));
+	
+	m_feedbackButton = createPixmapButton(tr("Feedback"), this, 317, 238, &controls->m_feedbackModel, "feedback_active", "feedback_inactive",
+										tr("Use output as sidechain signal instead of input"));
+	createPixmapButton(tr("Mid/Side"), this, 285, 238, &controls->m_midsideModel, "midside_active", "midside_inactive", tr("Compress mid/side channels instead of left/right"));
+	m_lowSideUpwardSuppressButton = createPixmapButton(tr("Suppress upward compression for side band"), this, 106, 180, &controls->m_lowSideUpwardSuppressModel,
+														"lowSideUpwardSuppress_active", "lowSideUpwardSuppress_inactive", tr("Suppress upward compression for side band"));
+	createPixmapButton(tr("Lookahead"), this, 147, 0, &controls->m_lookaheadEnableModel, "lookahead_active", "lookahead_inactive",
+						tr(("Enable lookahead with fixed " + std::to_string(int(LOMM_MAX_LOOKAHEAD)) + " ms latency").c_str()));
+	createLcdFloatSpinBox(2, 2, "11green", tr("Lookahead"), this, 214, 2, &controls->m_lookaheadModel, tr("Lookahead length"));
+	
+	PixmapButton* initButton = createPixmapButton(tr("Clear all parameters"), this, 84, 237, nullptr, "init_active", "init_inactive", tr("Clear all parameters"));
+	
+	connect(initButton, SIGNAL(clicked()), m_controls, SLOT(resetAllParameters()));
+	connect(&controls->m_lookaheadEnableModel, SIGNAL(dataChanged()), this, SLOT(updateFeedbackVisibility()));
+	connect(&controls->m_midsideModel, SIGNAL(dataChanged()), this, SLOT(updateLowSideUpwardSuppressVisibility()));
+	connect(getGUI()->mainWindow(), SIGNAL(periodicUpdate()), this, SLOT(updateDisplay()));
+	
+	emit updateFeedbackVisibility();
+	emit updateLowSideUpwardSuppressVisibility();
+}
+
+void LOMMControlDialog::updateFeedbackVisibility()
+{
+	m_feedbackButton->setVisible(!m_controls->m_lookaheadEnableModel.value());
+}
+
+void LOMMControlDialog::updateLowSideUpwardSuppressVisibility()
+{
+	m_lowSideUpwardSuppressButton->setVisible(m_controls->m_midsideModel.value());
+}
+
+void LOMMControlDialog::updateDisplay()
+{
+	update();
+}
+
+void LOMMControlDialog::paintEvent(QPaintEvent *event)
+{
+	if (!isVisible()) { return; }
+
+	QPainter p;
+	p.begin(this);
+
+	// Draw threshold lines
+	QColor aColor(255, 255, 0, 31);
+	QColor bColor(255, 0, 0, 31);
+	QPen aPen(QColor(255, 255, 0, 255), 1);
+	QPen bPen(QColor(255, 0, 0, 255), 1);
+	int thresholdsX[] = {dbfsToX(m_controls->m_aThreshHModel.value()),
+						dbfsToX(m_controls->m_aThreshMModel.value()),
+						dbfsToX(m_controls->m_aThreshLModel.value()),
+						dbfsToX(m_controls->m_bThreshHModel.value()),
+						dbfsToX(m_controls->m_bThreshMModel.value()),
+						dbfsToX(m_controls->m_bThreshLModel.value())};
+	for (int i = 0; i < 3; ++i) {
+		p.setPen(aPen);
+		p.fillRect(thresholdsX[i], LOMM_DISPLAY_Y[2 * i], LOMM_DISPLAY_X + LOMM_DISPLAY_WIDTH - thresholdsX[i], LOMM_DISPLAY_Y[2 * i + 1] + LOMM_DISPLAY_HEIGHT - LOMM_DISPLAY_Y[2 * i], aColor);
+		p.drawLine(thresholdsX[i], LOMM_DISPLAY_Y[2 * i], thresholdsX[i], LOMM_DISPLAY_Y[2 * i + 1] + LOMM_DISPLAY_HEIGHT);
+
+		p.setPen(bPen);
+		p.fillRect(LOMM_DISPLAY_X, LOMM_DISPLAY_Y[2 * i], thresholdsX[i + 3] - LOMM_DISPLAY_X, LOMM_DISPLAY_Y[2 * i + 1] + LOMM_DISPLAY_HEIGHT - LOMM_DISPLAY_Y[2 * i], bColor);
+		p.drawLine(thresholdsX[i + 3], LOMM_DISPLAY_Y[2 * i], thresholdsX[i + 3], LOMM_DISPLAY_Y[2 * i + 1] + LOMM_DISPLAY_HEIGHT);
+	}
+	
+	QPen inputPen(QColor(200, 200, 200, 80), 1);
+	QPen outputPen(QColor(255, 255, 255, 255), 1);
+	for (int i = 0; i < 3; ++i) {
+		// Draw input lines
+		p.setPen(inputPen);
+		int inL = dbfsToX(m_controls->m_effect->m_displayIn[i][0]);
+		p.drawLine(inL, LOMM_DISPLAY_Y[2 * i] + 4, inL, LOMM_DISPLAY_Y[2 * i] + LOMM_DISPLAY_HEIGHT);
+		int inR = dbfsToX(m_controls->m_effect->m_displayIn[i][1]);
+		p.drawLine(inR, LOMM_DISPLAY_Y[2 * i + 1], inR, LOMM_DISPLAY_Y[2 * i + 1] + LOMM_DISPLAY_HEIGHT - 4);
+
+		// Draw output lines
+		p.setPen(outputPen);
+		int outL = dbfsToX(m_controls->m_effect->m_displayOut[i][0]);
+		p.drawLine(outL, LOMM_DISPLAY_Y[2 * i], outL, LOMM_DISPLAY_Y[2 * i] + LOMM_DISPLAY_HEIGHT);
+		int outR = dbfsToX(m_controls->m_effect->m_displayOut[i][1]);
+		p.drawLine(outR, LOMM_DISPLAY_Y[2 * i + 1], outR, LOMM_DISPLAY_Y[2 * i + 1] + LOMM_DISPLAY_HEIGHT);
+	}
+
+	p.end();
+}
+
+int LOMMControlDialog::dbfsToX(float dbfs)
+{
+	float returnX = (dbfs - LOMM_DISPLAY_MIN) / (LOMM_DISPLAY_MAX - LOMM_DISPLAY_MIN);
+	returnX = qBound(LOMM_DISPLAY_X, LOMM_DISPLAY_X + returnX * LOMM_DISPLAY_WIDTH, LOMM_DISPLAY_X + LOMM_DISPLAY_WIDTH);
+	return returnX;
+}
+
+float LOMMControlDialog::xToDbfs(int x)
+{
+	float xNorm = static_cast<float>(x - LOMM_DISPLAY_X) / LOMM_DISPLAY_WIDTH;
+	float dbfs = xNorm * (LOMM_DISPLAY_MAX - LOMM_DISPLAY_MIN) + LOMM_DISPLAY_MIN;
+	return dbfs;
+}
+
+void LOMMControlDialog::mousePressEvent(QMouseEvent* event)
+{
+	if ((event->button() == Qt::LeftButton || event->button() == Qt::MiddleButton) && !(event->modifiers() & (Qt::ControlModifier | Qt::ShiftModifier)))
+	{
+		const QPoint& p = event->pos();
+
+		if (LOMM_DISPLAY_X - 10 <= p.x() && p.x() <= LOMM_DISPLAY_X + LOMM_DISPLAY_WIDTH + 10)
+		{
+			FloatModel* aThresh[] = {&m_controls->m_aThreshHModel, &m_controls->m_aThreshMModel, &m_controls->m_aThreshLModel};
+			FloatModel* bThresh[] = {&m_controls->m_bThreshHModel, &m_controls->m_bThreshMModel, &m_controls->m_bThreshLModel};
+
+			for (int i = 0; i < 3; ++i)
+			{
+				if (LOMM_DISPLAY_Y[i * 2] <= p.y() && p.y() <= LOMM_DISPLAY_Y[i * 2 + 1] + LOMM_DISPLAY_HEIGHT)
+				{
+					int behavior = (p.x() < dbfsToX(bThresh[i]->value())) ? 0 : (p.x() > dbfsToX(aThresh[i]->value())) ? 1 : 2;
+					if (event->button() == Qt::MiddleButton)
+					{
+						if (behavior == 0 || behavior == 2) {bThresh[i]->reset();}
+						if (behavior == 1 || behavior == 2) {aThresh[i]->reset();}
+						return;
+					}
+
+					m_bandDrag = i;
+					m_lastMousePos = p;
+					m_buttonPressed = true;
+
+					m_dragType = behavior;
+					return;
+				}
+			}
+		}
+	}
+}
+
+void LOMMControlDialog::mouseMoveEvent(QMouseEvent * event)
+{
+	if (m_buttonPressed && event->pos() != m_lastMousePos)
+	{
+		const float distance = event->pos().x() - m_lastMousePos.x();
+		float dbDistance = distance * LOMM_DISPLAY_DB_PER_PIXEL;
+		m_lastMousePos = event->pos();
+		
+		FloatModel* aModel[] = {&m_controls->m_aThreshHModel, &m_controls->m_aThreshMModel, &m_controls->m_aThreshLModel};
+		FloatModel* bModel[] = {&m_controls->m_bThreshHModel, &m_controls->m_bThreshMModel, &m_controls->m_bThreshLModel};
+		
+		float bVal = bModel[m_bandDrag]->value();
+		float aVal = aModel[m_bandDrag]->value();
+		if (m_dragType == 0)
+		{
+			bModel[m_bandDrag]->setValue(bVal + dbDistance);
+		}
+		else if (m_dragType == 1)
+		{
+			aModel[m_bandDrag]->setValue(aVal + dbDistance);
+		}
+		else
+		{
+			dbDistance = qBound(bModel[m_bandDrag]->minValue(), bVal + dbDistance, bModel[m_bandDrag]->maxValue()) - bVal;
+			dbDistance = qBound(aModel[m_bandDrag]->minValue(), aVal + dbDistance, aModel[m_bandDrag]->maxValue()) - aVal;
+			bModel[m_bandDrag]->setValue(bVal + dbDistance);
+			aModel[m_bandDrag]->setValue(aVal + dbDistance);
+		}
+	}
+}
+
+void LOMMControlDialog::mouseReleaseEvent(QMouseEvent* event)
+{
+	if (event && event->button() == Qt::LeftButton)
+	{
+		m_buttonPressed = false;
+	}
+}
+
+
+} // namespace lmms::gui

plugins/LOMM/LOMMControlDialog.h

@@ -0,0 +1,129 @@
+/*
+ * LOMMControlDialog.h
+ *
+ * Copyright (c) 2023 Lost Robot <r94231/at/gmail/dot/com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef LMMS_GUI_LOMM_CONTROL_DIALOG_H
+#define LMMS_GUI_LOMM_CONTROL_DIALOG_H
+
+#include "EffectControlDialog.h"
+
+#include <QMouseEvent>
+#include <QPainter>
+
+#include "embed.h"
+#include "GuiApplication.h"
+#include "Knob.h"
+#include "LcdFloatSpinBox.h"
+#include "LcdSpinBox.h"
+#include "LedCheckBox.h"
+#include "MainWindow.h"
+#include "PixmapButton.h"
+
+namespace lmms
+{
+
+inline constexpr float LOMM_DISPLAY_MIN = -72;
+inline constexpr float LOMM_DISPLAY_MAX = 0;
+inline constexpr float LOMM_DISPLAY_X = 125;
+inline constexpr float LOMM_DISPLAY_Y[6] = {24, 41, 106, 123, 186, 203};
+inline constexpr float LOMM_DISPLAY_WIDTH = 150;
+inline constexpr float LOMM_DISPLAY_HEIGHT = 13;
+inline constexpr float LOMM_DISPLAY_DB_PER_PIXEL = (LOMM_DISPLAY_MAX - LOMM_DISPLAY_MIN) / LOMM_DISPLAY_WIDTH;
+
+class LOMMControls;
+
+
+namespace gui
+{
+
+class LOMMControlDialog : public EffectControlDialog
+{
+	Q_OBJECT
+public:
+	LOMMControlDialog(LOMMControls* controls);
+	~LOMMControlDialog() override = default;
+	
+	int dbfsToX(float dbfs);
+	float xToDbfs(int x);
+	
+	Knob* createKnob(KnobType knobType, QWidget* parent, int x, int y, FloatModel* model, const QString& hintText, const QString& unit, const QString& toolTip)
+	{
+		Knob* knob = new Knob(knobType, parent);
+		knob->move(x, y);
+		knob->setModel(model);
+		knob->setHintText(hintText, unit);
+		knob->setToolTip(toolTip);
+		return knob;
+	}
+	
+	LcdFloatSpinBox* createLcdFloatSpinBox(int integerDigits, int decimalDigits, const QString& color, const QString& unit, QWidget* parent, int x, int y, FloatModel* model, const QString& toolTip)
+	{
+		LcdFloatSpinBox* spinBox = new LcdFloatSpinBox(integerDigits, decimalDigits, color, unit, parent);
+		spinBox->move(x, y);
+		spinBox->setModel(model);
+		spinBox->setSeamless(true, true);
+		spinBox->setToolTip(toolTip);
+		return spinBox;
+	}
+	
+	PixmapButton* createPixmapButton(const QString& text, QWidget* parent, int x, int y, BoolModel* model, const QString& activeIcon, const QString& inactiveIcon, const QString& tooltip)
+	{
+		PixmapButton* button = new PixmapButton(parent, text);
+		button->move(x, y);
+		button->setCheckable(true);
+		if (model) { button->setModel(model); }
+		button->setActiveGraphic(PLUGIN_NAME::getIconPixmap(activeIcon));
+		button->setInactiveGraphic(PLUGIN_NAME::getIconPixmap(inactiveIcon));
+		button->setToolTip(tooltip);
+		return button;
+	}
+
+protected:
+	void paintEvent(QPaintEvent *event) override;
+	void mousePressEvent(QMouseEvent* event) override;
+	void mouseReleaseEvent(QMouseEvent* event) override;
+	void mouseMoveEvent(QMouseEvent* event) override;
+
+private:
+	LOMMControls* m_controls;
+	
+	QPoint m_lastMousePos;
+	bool m_buttonPressed = false;
+	int m_bandDrag = 0;
+	int m_dragType = -1;
+	
+	PixmapButton* m_feedbackButton;
+	PixmapButton* m_lowSideUpwardSuppressButton;
+
+private slots:
+	void updateFeedbackVisibility();
+	void updateLowSideUpwardSuppressVisibility();
+	void updateDisplay();
+};
+
+
+} // namespace gui
+
+} // namespace lmms
+
+#endif // LMMS_GUI_LOMM_CONTROL_DIALOG_H

plugins/LOMM/LOMMControls.cpp

@@ -0,0 +1,277 @@
+/*
+ * LOMMControls.cpp
+ *
+ * Copyright (c) 2023 Lost Robot <r94231/at/gmail/dot/com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+
+#include "LOMMControls.h"
+#include "LOMM.h"
+
+#include <QDomElement>
+#include <QMessageBox>
+
+namespace lmms
+{
+
+LOMMControls::LOMMControls(LOMMEffect* effect) :
+	EffectControls(effect),
+	m_effect(effect),
+	m_depthModel(0.4, 0, 1, 0.00001, this, tr("Depth")),
+	m_timeModel(1, 0, 10, 0.00001, this, tr("Time")),
+	m_inVolModel(0, -48, 48, 0.00001, this, tr("Input Volume")),
+	m_outVolModel(8, -48, 48, 0.00001, this, tr("Output Volume")),
+	m_upwardModel(1, 0, 2, 0.00001, this, tr("Upward Depth")),
+	m_downwardModel(1, 0, 2, 0.00001, this, tr("Downward Depth")),
+	m_split1Model(2500, 20, 20000, 0.01, this, tr("High/Mid Split")),
+	m_split2Model(88.3, 20, 20000, 0.01, this, tr("Mid/Low Split")),
+	m_split1EnabledModel(true, this, tr("Enable High/Mid Split")),
+	m_split2EnabledModel(true, this, tr("Enable Mid/Low Split")),
+	m_band1EnabledModel(true, this, tr("Enable High Band")),
+	m_band2EnabledModel(true, this, tr("Enable Mid Band")),
+	m_band3EnabledModel(true, this, tr("Enable Low Band")),
+	m_inHighModel(0, -48, 48, 0.00001, this, tr("High Input Volume")),
+	m_inMidModel(0, -48, 48, 0.00001, this, tr("Mid Input Volume")),
+	m_inLowModel(0, -48, 48, 0.00001, this, tr("Low Input Volume")),
+	m_outHighModel(4.6, -48, 48, 0.00001, this, tr("High Output Volume")),
+	m_outMidModel(0.0, -48, 48, 0.00001, this, tr("Mid Output Volume")),
+	m_outLowModel(4.6, -48, 48, 0.00001, this, tr("Low Output Volume")),
+	m_aThreshHModel(-30.3, LOMM_DISPLAY_MIN, LOMM_DISPLAY_MAX, 0.001, this, tr("Above Threshold High")),
+	m_aThreshMModel(-25.0, LOMM_DISPLAY_MIN, LOMM_DISPLAY_MAX, 0.001, this, tr("Above Threshold Mid")),
+	m_aThreshLModel(-28.6, LOMM_DISPLAY_MIN, LOMM_DISPLAY_MAX, 0.001, this, tr("Above Threshold Low")),
+	m_aRatioHModel(99.99, 1, 99.99, 0.01, this, tr("Above Ratio High")),
+	m_aRatioMModel(66.7, 1, 99.99, 0.01, this, tr("Above Ratio Mid")),
+	m_aRatioLModel(66.7, 1, 99.99, 0.01, this, tr("Above Ratio Low")),
+	m_bThreshHModel(-35.6, LOMM_DISPLAY_MIN, LOMM_DISPLAY_MAX, 0.001, this, tr("Below Threshold High")),
+	m_bThreshMModel(-36.6, LOMM_DISPLAY_MIN, LOMM_DISPLAY_MAX, 0.001, this, tr("Below Threshold Mid")),
+	m_bThreshLModel(-35.6, LOMM_DISPLAY_MIN, LOMM_DISPLAY_MAX, 0.001, this, tr("Below Threshold Low")),
+	m_bRatioHModel(4.17, 1, 99.99, 0.01, this, tr("Below Ratio High")),
+	m_bRatioMModel(4.17, 1, 99.99, 0.01, this, tr("Below Ratio Mid")),
+	m_bRatioLModel(4.17, 1, 99.99, 0.01, this, tr("Below Ratio Low")),
+	m_atkHModel(13.5, 0, 1000, 0.001, this, tr("Attack High")),
+	m_atkMModel(22.4, 0, 1000, 0.001, this, tr("Attack Mid")),
+	m_atkLModel(47.8, 0, 1000, 0.001, this, tr("Attack Low")),
+	m_relHModel(132, 0, 1000, 0.001, this, tr("Release High")),
+	m_relMModel(282, 0, 1000, 0.001, this, tr("Release Mid")),
+	m_relLModel(282, 0, 1000, 0.001, this, tr("Release Low")),
+	m_rmsTimeModel(10, 0, 500, 0.001, this, tr("RMS Time")),
+	m_kneeModel(6, 0, 36, 0.00001, this, tr("Knee")),
+	m_rangeModel(36, 0, 96, 0.00001, this, tr("Range")),
+	m_balanceModel(0, -18, 18, 0.00001, this, tr("Balance")),
+	m_depthScalingModel(true, this, tr("Scale output volume with Depth")),
+	m_stereoLinkModel(false, this, tr("Stereo Link")),
+	m_autoTimeModel(0, 0, 1, 0.00001, this, tr("Auto Time")),
+	m_mixModel(1, 0, 1, 0.00001, this, tr("Mix")),
+	m_feedbackModel(false, this, tr("Feedback")),
+	m_midsideModel(false, this, tr("Mid/Side")),
+	m_lookaheadEnableModel(false, this, tr("Lookahead")),
+	m_lookaheadModel(0.f, 0.f, LOMM_MAX_LOOKAHEAD, 0.01, this, tr("Lookahead Length")),
+	m_lowSideUpwardSuppressModel(false, this, tr("Suppress upward compression for side band"))
+{
+	auto models = {&m_timeModel, &m_inVolModel, &m_outVolModel, &m_inHighModel, &m_inMidModel,
+		&m_inLowModel, &m_outHighModel, &m_outMidModel, &m_outLowModel, &m_aRatioHModel,
+		&m_aRatioMModel, &m_aRatioLModel, &m_bRatioHModel, &m_bRatioMModel, &m_bRatioLModel,
+		&m_atkHModel, &m_atkMModel, &m_atkLModel, &m_relHModel, &m_relMModel, &m_relLModel,
+		&m_rmsTimeModel, &m_balanceModel};
+	for (auto model : models) { model->setScaleLogarithmic(true); }
+}
+
+
+void LOMMControls::resetAllParameters()
+{
+	int choice = QMessageBox::question(m_view, "Clear Plugin Settings", "Are you sure you want to clear all parameters?\n(This wipes LOMM to a clean slate, not the default preset.)", QMessageBox::Yes | QMessageBox::No);
+	if (choice != QMessageBox::Yes) { return; }
+	
+	// give the user a chance to beg LMMS for forgiveness
+	addJournalCheckPoint();
+	
+	// This plugin's normal default values are fairly close to what they'd want in most applications.
+	// The Init button is there so the user can start from a clean slate instead.
+	// These are those values.
+	setInitAndReset(m_depthModel, 1);
+	setInitAndReset(m_timeModel, 1);
+	setInitAndReset(m_inVolModel, 0);
+	setInitAndReset(m_outVolModel, 0);
+	setInitAndReset(m_upwardModel, 1);
+	setInitAndReset(m_downwardModel, 1);
+	setInitAndReset(m_split1Model, 2500);
+	setInitAndReset(m_split2Model, 88);
+	setInitAndReset(m_split1EnabledModel, true);
+	setInitAndReset(m_split2EnabledModel, true);
+	setInitAndReset(m_band1EnabledModel, true);
+	setInitAndReset(m_band2EnabledModel, true);
+	setInitAndReset(m_band3EnabledModel, true);
+	setInitAndReset(m_inHighModel, 0);
+	setInitAndReset(m_inMidModel, 0);
+	setInitAndReset(m_inLowModel, 0);
+	setInitAndReset(m_outHighModel, 0);
+	setInitAndReset(m_outMidModel, 0);
+	setInitAndReset(m_outLowModel, 0);
+	setInitAndReset(m_aThreshHModel, m_aThreshHModel.maxValue());
+	setInitAndReset(m_aThreshMModel, m_aThreshMModel.maxValue());
+	setInitAndReset(m_aThreshLModel, m_aThreshLModel.maxValue());
+	setInitAndReset(m_aRatioHModel, 1);
+	setInitAndReset(m_aRatioMModel, 1);
+	setInitAndReset(m_aRatioLModel, 1);
+	setInitAndReset(m_bThreshHModel, m_bThreshHModel.minValue());
+	setInitAndReset(m_bThreshMModel, m_bThreshMModel.minValue());
+	setInitAndReset(m_bThreshLModel, m_bThreshLModel.minValue());
+	setInitAndReset(m_bRatioHModel, 1);
+	setInitAndReset(m_bRatioMModel, 1);
+	setInitAndReset(m_bRatioLModel, 1);
+	setInitAndReset(m_atkHModel, 13.5);
+	setInitAndReset(m_atkMModel, 22.4);
+	setInitAndReset(m_atkLModel, 47.8);
+	setInitAndReset(m_relHModel, 132);
+	setInitAndReset(m_relMModel, 282);
+	setInitAndReset(m_relLModel, 282);
+	setInitAndReset(m_rmsTimeModel, 10);
+	setInitAndReset(m_kneeModel, 6);
+	setInitAndReset(m_rangeModel, 36);
+	setInitAndReset(m_balanceModel, 0);
+	setInitAndReset(m_depthScalingModel, true);
+	setInitAndReset(m_stereoLinkModel, false);
+	setInitAndReset(m_autoTimeModel, 0);
+	setInitAndReset(m_mixModel, 1);
+	setInitAndReset(m_feedbackModel, false);
+	setInitAndReset(m_midsideModel, false);
+	setInitAndReset(m_lookaheadEnableModel, false);
+	setInitAndReset(m_lookaheadModel, 0.f);
+	setInitAndReset(m_lowSideUpwardSuppressModel, false);
+}
+
+
+
+void LOMMControls::loadSettings(const QDomElement& parent)
+{
+	m_depthModel.loadSettings(parent, "depth");
+	m_timeModel.loadSettings(parent, "time");
+	m_inVolModel.loadSettings(parent, "inVol");
+	m_outVolModel.loadSettings(parent, "outVol");
+	m_upwardModel.loadSettings(parent, "upward");
+	m_downwardModel.loadSettings(parent, "downward");
+	m_split1Model.loadSettings(parent, "split1");
+	m_split2Model.loadSettings(parent, "split2");
+	m_split1EnabledModel.loadSettings(parent, "split1Enabled");
+	m_split2EnabledModel.loadSettings(parent, "split2Enabled");
+	m_band1EnabledModel.loadSettings(parent, "band1Enabled");
+	m_band2EnabledModel.loadSettings(parent, "band2Enabled");
+	m_band3EnabledModel.loadSettings(parent, "band3Enabled");
+	m_inHighModel.loadSettings(parent, "inHigh");
+	m_inMidModel.loadSettings(parent, "inMid");
+	m_inLowModel.loadSettings(parent, "inLow");
+	m_outHighModel.loadSettings(parent, "outHigh");
+	m_outMidModel.loadSettings(parent, "outMid");
+	m_outLowModel.loadSettings(parent, "outLow");
+	m_aThreshHModel.loadSettings(parent, "aThreshH");
+	m_aThreshMModel.loadSettings(parent, "aThreshM");
+	m_aThreshLModel.loadSettings(parent, "aThreshL");
+	m_aRatioHModel.loadSettings(parent, "aRatioH");
+	m_aRatioMModel.loadSettings(parent, "aRatioM");
+	m_aRatioLModel.loadSettings(parent, "aRatioL");
+	m_bThreshHModel.loadSettings(parent, "bThreshH");
+	m_bThreshMModel.loadSettings(parent, "bThreshM");
+	m_bThreshLModel.loadSettings(parent, "bThreshL");
+	m_bRatioHModel.loadSettings(parent, "bRatioH");
+	m_bRatioMModel.loadSettings(parent, "bRatioM");
+	m_bRatioLModel.loadSettings(parent, "bRatioL");
+	m_atkHModel.loadSettings(parent, "atkH");
+	m_atkMModel.loadSettings(parent, "atkM");
+	m_atkLModel.loadSettings(parent, "atkL");
+	m_relHModel.loadSettings(parent, "relH");
+	m_relMModel.loadSettings(parent, "relM");
+	m_relLModel.loadSettings(parent, "relL");
+	m_rmsTimeModel.loadSettings(parent, "rmsTime");
+	m_kneeModel.loadSettings(parent, "knee");
+	m_rangeModel.loadSettings(parent, "range");
+	m_balanceModel.loadSettings(parent, "balance");
+	m_depthScalingModel.loadSettings(parent, "depthScaling");
+	m_stereoLinkModel.loadSettings(parent, "stereoLink");
+	m_autoTimeModel.loadSettings(parent, "autoTime");
+	m_mixModel.loadSettings(parent, "mix");
+	m_feedbackModel.loadSettings(parent, "feedback");
+	m_midsideModel.loadSettings(parent, "midside");
+	m_lookaheadEnableModel.loadSettings(parent, "lookaheadEnable");
+	m_lookaheadModel.loadSettings(parent, "lookahead");
+	m_lowSideUpwardSuppressModel.loadSettings(parent, "lowSideUpwardSuppress");
+}
+
+
+
+
+void LOMMControls::saveSettings(QDomDocument& doc, QDomElement& parent)
+{
+	m_depthModel.saveSettings(doc, parent, "depth");
+	m_timeModel.saveSettings(doc, parent, "time");
+	m_inVolModel.saveSettings(doc, parent, "inVol");
+	m_outVolModel.saveSettings(doc, parent, "outVol");
+	m_upwardModel.saveSettings(doc, parent, "upward");
+	m_downwardModel.saveSettings(doc, parent, "downward");
+	m_split1Model.saveSettings(doc, parent, "split1");
+	m_split2Model.saveSettings(doc, parent, "split2");
+	m_split1EnabledModel.saveSettings(doc, parent, "split1Enabled");
+	m_split2EnabledModel.saveSettings(doc, parent, "split2Enabled");
+	m_band1EnabledModel.saveSettings(doc, parent, "band1Enabled");
+	m_band2EnabledModel.saveSettings(doc, parent, "band2Enabled");
+	m_band3EnabledModel.saveSettings(doc, parent, "band3Enabled");
+	m_inHighModel.saveSettings(doc, parent, "inHigh");
+	m_inMidModel.saveSettings(doc, parent, "inMid");
+	m_inLowModel.saveSettings(doc, parent, "inLow");
+	m_outHighModel.saveSettings(doc, parent, "outHigh");
+	m_outMidModel.saveSettings(doc, parent, "outMid");
+	m_outLowModel.saveSettings(doc, parent, "outLow");
+	m_aThreshHModel.saveSettings(doc, parent, "aThreshH");
+	m_aThreshMModel.saveSettings(doc, parent, "aThreshM");
+	m_aThreshLModel.saveSettings(doc, parent, "aThreshL");
+	m_aRatioHModel.saveSettings(doc, parent, "aRatioH");
+	m_aRatioMModel.saveSettings(doc, parent, "aRatioM");
+	m_aRatioLModel.saveSettings(doc, parent, "aRatioL");
+	m_bThreshHModel.saveSettings(doc, parent, "bThreshH");
+	m_bThreshMModel.saveSettings(doc, parent, "bThreshM");
+	m_bThreshLModel.saveSettings(doc, parent, "bThreshL");
+	m_bRatioHModel.saveSettings(doc, parent, "bRatioH");
+	m_bRatioMModel.saveSettings(doc, parent, "bRatioM");
+	m_bRatioLModel.saveSettings(doc, parent, "bRatioL");
+	m_atkHModel.saveSettings(doc, parent, "atkH");
+	m_atkMModel.saveSettings(doc, parent, "atkM");
+	m_atkLModel.saveSettings(doc, parent, "atkL");
+	m_relHModel.saveSettings(doc, parent, "relH");
+	m_relMModel.saveSettings(doc, parent, "relM");
+	m_relLModel.saveSettings(doc, parent, "relL");
+	m_rmsTimeModel.saveSettings(doc, parent, "rmsTime");
+	m_kneeModel.saveSettings(doc, parent, "knee");
+	m_rangeModel.saveSettings(doc, parent, "range");
+	m_balanceModel.saveSettings(doc, parent, "balance");
+	m_depthScalingModel.saveSettings(doc, parent, "depthScaling");
+	m_stereoLinkModel.saveSettings(doc, parent, "stereoLink");
+	m_autoTimeModel.saveSettings(doc, parent, "autoTime");
+	m_mixModel.saveSettings(doc, parent, "mix");
+	m_feedbackModel.saveSettings(doc, parent, "feedback");
+	m_midsideModel.saveSettings(doc, parent, "midside");
+	m_lookaheadEnableModel.saveSettings(doc, parent, "lookaheadEnable");
+	m_lookaheadModel.saveSettings(doc, parent, "lookahead");
+	m_lowSideUpwardSuppressModel.saveSettings(doc, parent, "lowSideUpwardSuppress");
+}
+
+
+} // namespace lmms
+
+

plugins/LOMM/LOMMControls.h

@@ -0,0 +1,136 @@
+/*
+ * LOMMControls.h
+ *
+ * Copyright (c) 2023 Lost Robot <r94231/at/gmail/dot/com>
+ *
+ * This file is part of LMMS - https://lmms.io
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public
+ * License along with this program (see COPYING); if not, write to the
+ * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301 USA.
+ *
+ */
+
+#ifndef LMMS_LOMM_CONTROLS_H
+#define LMMS_LOMM_CONTROLS_H
+
+#include "LOMMControlDialog.h"
+#include "EffectControls.h"
+
+namespace lmms
+{
+class LOMMEffect;
+
+namespace gui
+{
+class LOMMControlDialog;
+}
+
+class LOMMControls : public EffectControls
+{
+	Q_OBJECT
+public:
+	LOMMControls(LOMMEffect* effect);
+	~LOMMControls() override = default;
+
+	void saveSettings(QDomDocument & doc, QDomElement & parent) override;
+	void loadSettings(const QDomElement & parent) override;
+	inline QString nodeName() const override
+	{
+		return "LOMMControls";
+	}
+
+	int controlCount() override
+	{
+		return 49;
+	}
+
+	gui::EffectControlDialog* createView() override
+	{
+		m_view = new gui::LOMMControlDialog(this);
+		return m_view;
+	}
+	
+	template <typename T>
+	void setInitAndReset(AutomatableModel& model, T initValue)
+	{
+		model.setInitValue(initValue);
+		model.reset();
+	}
+	
+public slots:
+	void resetAllParameters();
+
+private:
+	LOMMEffect* m_effect;
+	gui::LOMMControlDialog* m_view;
+	
+	FloatModel m_depthModel;
+	FloatModel m_timeModel;
+	FloatModel m_inVolModel;
+	FloatModel m_outVolModel;
+	FloatModel m_upwardModel;
+	FloatModel m_downwardModel;
+	FloatModel m_split1Model;
+	FloatModel m_split2Model;
+	BoolModel m_split1EnabledModel;
+	BoolModel m_split2EnabledModel;
+	BoolModel m_band1EnabledModel;
+	BoolModel m_band2EnabledModel;
+	BoolModel m_band3EnabledModel;
+	FloatModel m_inHighModel;
+	FloatModel m_inMidModel;
+	FloatModel m_inLowModel;
+	FloatModel m_outHighModel;
+	FloatModel m_outMidModel;
+	FloatModel m_outLowModel;
+	FloatModel m_aThreshHModel;
+	FloatModel m_aThreshMModel;
+	FloatModel m_aThreshLModel;
+	FloatModel m_aRatioHModel;
+	FloatModel m_aRatioMModel;
+	FloatModel m_aRatioLModel;
+	FloatModel m_bThreshHModel;
+	FloatModel m_bThreshMModel;
+	FloatModel m_bThreshLModel;
+	FloatModel m_bRatioHModel;
+	FloatModel m_bRatioMModel;
+	FloatModel m_bRatioLModel;
+	FloatModel m_atkHModel;
+	FloatModel m_atkMModel;
+	FloatModel m_atkLModel;
+	FloatModel m_relHModel;
+	FloatModel m_relMModel;
+	FloatModel m_relLModel;
+	FloatModel m_rmsTimeModel;
+	FloatModel m_kneeModel;
+	FloatModel m_rangeModel;
+	FloatModel m_balanceModel;
+	BoolModel m_depthScalingModel;
+	BoolModel m_stereoLinkModel;
+	FloatModel m_autoTimeModel;
+	FloatModel m_mixModel;
+	BoolModel m_feedbackModel;
+	BoolModel m_midsideModel;
+	BoolModel m_lookaheadEnableModel;
+	FloatModel m_lookaheadModel;
+	BoolModel m_lowSideUpwardSuppressModel;
+	
+	friend class gui::LOMMControlDialog;
+	friend class LOMMEffect;
+};
+
+} // namespace lmms
+
+#endif // LMMS_LOMM_CONTROLS_H